How to Validate an Email Address Using C

How to Validate an Email Address Using C

Greetings, in this C tutorial we shall be looking at how to validate an email address using C. This tutorial doesn't perfect C email address validation.

This C email validation method provides a few checks on the input to help ensure the user doesn't input the wrong type of data. For example, the user might input their name instead of their email. Or their address instead of their email address. We are checking if the email input is reasonable, not correct.

To check if an email is valid in C, we won't be using a regex. Here are the steps we are taking in this C tutorial to check if an email address is valid or not:

The function isValidEmail takes a char* called email as input to check its validity.

It initializes a counter variable atCount to keep track of the number of @ symbols in the email.

The function then enters a loop to iterate through each character in the email.

In each iteration, it checks if any illegal email characters exist. If any of the special characters are found in the email, the function immediately returns false, indicating that the email is invalid.

If no special characters are found, the function continues with the loop, counting the occurrences of the @ symbol in the email.

After the loop, the function checks if exactly one @ symbol was found (atCount == 1).

If one @ symbol is found, the function checks if the first character of the email is not the @ symbol itself.

If the above condition is met, it searches for a dot ('.') character using the strchr function in the remaining part of the email after the @ symbol.

If a dot is found and it appears after the @ symbol, the function returns true, indicating that the email is valid.

If any of the above conditions fail, the function returns false, indicating that the email is invalid.

Here is the C code used to validate an email in this C tutorial: https://pastebin.com/PBn5Et2V

Thanks for watching this C tutorial on how to validate an email.

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C email address validation.

How to Validate an Email Address Using C ... https://www.youtube.com/watch?v=ViqyHIyfHYo